US9193410B2 - Scooter-type electric vehicle - Google Patents

Scooter-type electric vehicle Download PDF

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Publication number
US9193410B2
US9193410B2 US13/819,589 US201113819589A US9193410B2 US 9193410 B2 US9193410 B2 US 9193410B2 US 201113819589 A US201113819589 A US 201113819589A US 9193410 B2 US9193410 B2 US 9193410B2
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Prior art keywords
batteries
vehicle
battery
scooter
frame
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US13/819,589
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US20130161108A1 (en
Inventor
Takato Watanabe
Katsuichi Yagisawa
Hisashi Matsuo
Hideki Inaizumi
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Assigned to HONDA MOTOR CO., LTD. reassignment HONDA MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INAIZUMI, HIDEKI, MATSUO, HISASHI, Watanabe, Takato, YAGISAWA, KATSUICHI
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J43/00Arrangements of batteries
    • B62J43/20Arrangements of batteries characterised by the mounting
    • B62J43/28Arrangements of batteries characterised by the mounting hidden within the cycle frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J11/00Supporting arrangements specially adapted for fastening specific devices to cycles, e.g. supports for attaching maps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J43/00Arrangements of batteries
    • B62J43/10Arrangements of batteries for propulsion
    • B62J43/16Arrangements of batteries for propulsion on motorcycles or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M7/00Motorcycles characterised by position of motor or engine
    • B62M7/12Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2202/00Motorised scooters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2204/00Adaptations for driving cycles by electric motor
    • B62K2208/00

Definitions

  • the present invention relates to a scooter-type electric vehicle.
  • Priority is claimed on Japanese Patent Application No. 2010-220725, filed Sep. 30, 2010, the contents of which are incorporated herein by reference.
  • a plurality of batteries Ba are arranged along a center frame F2 on the underside of a floor board 85.
  • the battery arranged in the widthwise center is large, and the batteries arranged on the left and right are small. As a result, it is possible to ensure a bank angle while ensuring battery capacity.
  • a high voltage motor is operated by connecting these plurality of batteries in series.
  • Patent Document 1 Japanese Patent No. 3079227
  • the breaker is fitted with the batteries at a position that takes into consideration water-exposure performance, assemblability, and maintainability of the breaker.
  • an object of the present invention is to provide a scooter-type electric vehicle which enables a battery connection operation to be performed by an operator in a superior operating posture, while improving water-exposure performance, assemblability, and maintainability of the breaker to be attached to the batteries.
  • the present invention employs the following aspects. That is to say,
  • An aspect of the present invention is provided with: a vehicle body frame which has a down frame extending down-backward from a head pipe, and a lower frame extending backward from the lower end of this down frame; a seat, which is provided at the rear of the head pipe, for allowing a passenger to sit thereon; a step floor, which is provided between the head pipe and the seat, for allowing the passenger to place their feet thereon; and a battery unit in which at least three batteries are lined up in the vehicle widthwise direction and these are connected in series to supply electric power to a driving motor.
  • center side batteries that are arranged on the vehicle center side are arranged higher than side batteries that are arranged on the vehicle outer sides, and a breaker is fitted to these center side batteries, on a connection path that connects the center side batteries.
  • the scooter-type electric vehicle includes not only two-wheeled motor vehicles but also three-wheeled (including ones with one front wheel and two rear wheels as well as ones with two front wheels and one rear wheel) and four-wheeled motor vehicles.
  • each side battery and the bottom surface of the center side batteries may form a space.
  • an under-seat cover which covers, below the seat, the rear of the step floor; in the under-seat cover there may be provided an opening which enables connection to be established from the space above the step floor to the breaker; and in the opening there may be provided a lid which opens and closes this opening.
  • a locking device capable of locking the lid.
  • a driver which is provided above the battery unit and which controls the driving motor, and a unit swing type power unit which is swingably supported on the vehicle body frame and has the driving motor built-in; and a wiring which supplies electric power from the driver to the driving motor may extend from the vehicle widthwise one side of the driver and may extend toward the vehicle widthwise other side at the rear of the battery unit to be guided into the unit swing type power unit.
  • steps for allowing a passenger sitting on the rear part of the seat to place their feet thereon may be further provided steps for allowing a passenger sitting on the rear part of the seat to place their feet thereon, and the steps may be arranged at positions, when viewed from the side, at the upper rear of the battery unit which do not overlap with the battery unit.
  • a rear frame which extends upward at a backward angle from the rear end of the lower frame, at least a part of the rear frame may be exposed to the outside of the vehicle body from a vehicle body cover, and the steps may be supported at this exposed part of the rear frame.
  • the side batteries on the vehicle outer side are low, when performing a connecting operation for the center side batteries on the vehicle body center side, the side batteries are unlikely to become an obstacle and the operation can be performed efficiently.
  • the serial connection of the respective batteries can be cut off easily, and in this state, an operator can smoothly perform an operation of battery unit attachment and detachment.
  • the breaker is arranged at a comparatively high position, enabling an operation to be performed in a superior posture compared to the case of a breaker being arranged at a low position. Furthermore, as a result of the breaker being arranged at a comparatively high position, it is possible to suppress the level of water exposure influence being exerted thereon.
  • a space can be formed by the lower inner side surface of the side battery on each transversely outer side and the bottom surface of the center side battery on each transversely inner side, and members such as wiring and cables can be arranged in this space.
  • an operation of breaker disconnection can be easily performed, and also, the breaker can be covered and hidden when no operation is being performed.
  • an operation of recharging each battery can be easily performed, and also the recharging opening can be covered and hidden when recharging has been completed.
  • high voltage wiring can be shortened to the greatest possible extent.
  • the wiring which connects between the driver and the driving motor is such that a portion thereof which extends along the vehicle widthwise direction at the rear of the battery unit can absorb torsion associated with swing of the unit swing type power unit, and it is therefore possible to mitigate force exerted in the flexing direction.
  • FIG. 1 is a left side view of a two-wheeled motor vehicle in an embodiment of the present invention.
  • FIG. 2 is a left side view of the two-wheeled motor vehicle in a state where a vehicle body cover is removed therefrom.
  • FIG. 3 is a top view of a vehicle body frame of the two-wheeled motor vehicle.
  • FIG. 4 is a front view of a vehicle body rear part of the two-wheeled motor vehicle.
  • FIG. 5 is a front view of the vehicle body rear part in a state where the vehicle body cover is removed therefrom.
  • FIG. 6 is a sectional view of the periphery of a battery unit of the vehicle body rear part.
  • FIG. 7 is a plan view of high voltage batteries and associated components thereof of the battery unit.
  • FIG. 8 is a left side view of the high voltage batteries and associated components thereof.
  • FIG. 9 is an enlarged view of the main part of FIG. 2 .
  • FIG. 10 is a right side view of FIG. 9 .
  • FIG. 11 is a perspective view of the vehicle body rear part.
  • FIG. 12 is a perspective view of the vehicle body rear part in a state where the vehicle body cover is removed therefrom.
  • FIG. 13 is a block diagram of the main part of the two-wheeled motor vehicle.
  • FIG. 14 is a perspective view of a swing unit and associated components thereof of the two-wheeled motor vehicle.
  • FIG. 15 is an enlarged view of the main part of FIG. 12 .
  • a scooter-type two-wheeled motor vehicle 1 shown in FIG. 1 and FIG. 2 is provided with a step floor 4 which is provided between a bar handle 2 for vehicle steering and a seat 3 for allowing a passenger to sit thereon, and which serves as a low floor part on which the passenger places their feet, and a vehicle body cover 5 which almost entirely covers the vehicle body.
  • Reference symbol M in the figure denotes a straddle space above the step floor 4 .
  • a battery unit 6 In a position at the rear of the step floor 4 there is mounted a battery unit 6 .
  • a driving motor 8 on the left side of a rear wheel 7 which is the driving wheel, drives upon receiving electric power from this battery unit 6 , and this driving power drives the rear wheel 7 , thereby causing the two-wheeled motor vehicle 1 to travel. That is to say, the two-wheeled motor vehicle 1 is configured as a scooter-type electric vehicle.
  • a vehicle body frame 11 of the two-wheeled motor vehicle 1 is composed such that several types of steel materials are integrally joined by means of welding or the like.
  • a head pipe 12 which steerably supports a front wheel suspension system.
  • a pivot 13 which is capable of vertically swinging a rear wheel suspension system.
  • the front wheel suspension system has: left and right front fork legs 15 which rotatably bear a front wheel 14 at the lower end part thereof a bridge member 16 which fixes the upper end parts of these left and right front fork legs 15 ; and a step pipe 17 which extends upward from the transversely center part of this bridge member 16 .
  • the step pipe 17 is relatively rotatably inserted into the head pipe 12 from the lower side thereof.
  • the upper end part of the step pipe 17 projects to the upper side of the head pipe 12 , and the bar handle 2 is fixed on this projected portion.
  • the rear wheel suspension system is provided with a swing arm 18 which rotatably bears the rear wheel 7 at the rear end part thereof.
  • the swing arm 18 forms a swing unit 18 U which has the driving motor 8 and a gear mechanism (speed reducer) 19 built-in at the rear end part of the left arm thereof.
  • the front end part of the swing unit 18 U is up-down swingably supported on the lower rear side of the vehicle body frame 11 via the pivot 13 .
  • the rear end part of the swing unit 18 U is elastically supported on the upper rear side of the vehicle body frame 11 via a cushion unit 21 .
  • the vehicle body frame 11 is provided with: the head pipe 12 ; a single down frame 22 the upper end (front end) of which is joined with the rear part of this head pipe 12 , and which extends, in the transversely center of the vehicle body, diagonally down-backward from the rear part of this head pipe 12 ; and a pair of left and right lower frames 23 the front ends of which are joined with both sides of the lower part of this down frame 22 , and which branch to the left and right from the lower part of this down frame 22 and extend backward at a rear-upward angle.
  • the lower end part of the down frame 22 and the front end parts of the lower frames 23 are bent in an L shape when viewed from the side of the vehicle while overlapping with each other when viewed from the side of the vehicle.
  • the front end parts of the lower frames 23 are joined with the lower part of the down frame 22 .
  • the line CL in FIG. 3 and other figures denotes the transversely center line of the vehicle body.
  • the left and right lower frames 23 are such that the front half parts thereof extend backward at an angle so that they are positioned more on the transversely outer side with approach to the rear side, and the rear half parts thereof extend backward in parallel with the vehicle body center plane (denoted with the center line CL).
  • the front-rear intermediate parts of the left and right lower frames 23 are connected by a center cross pipe 24 , which is parallel with the left-right direction.
  • the front parts of the left and right lower frames 23 are connected by a front cross pipe 24 a , which is parallel with the left-right direction.
  • the rear parts of the left and right lower frames 23 are connected by a rear lower pipe 27 , both end sections of which extend diagonally down-backward and the center part of which extends to left and right.
  • the lower end (rear end) of the down frame 22 On the front-rear intermediate part of the left lower frame 23 there is fixed a side stand bracket 24 b which rotatably supports a side stand 29 a .
  • the rear parts of the left and right lower frames 23 form the maximum width of the vehicle body frame 11 , and between the rear parts of the left and right lower frames 23 , and between the center cross pipe 24 and the rear lower pipe 27 there is mounted the battery unit 6 .
  • the rear end parts of the left and right lower frames 23 are bent upward, and to these rear end parts there are integrally connected the lower end parts of left and right rear frames 25 which extend upward with a slightly backward angle.
  • the upper end parts of the left and right rear frames 25 are bent backward, and to these upper end parts there are integrally connected the front end parts of left and right seat frames 25 a which extend backward with a slightly rear-upward angle.
  • the left and right rear frames 25 are angled so as to be positioned more on the transversely inner side with approach to the upper side (refer to FIG. 5 ), and the left and right seat frames 25 a are angled so as to be positioned more on the transversely inner side with approach to the rear side.
  • reference symbol 26 denotes a rear lower cross pipe which connects between vertically intermediate parts of the left and right rear frames 25
  • reference symbol 26 a denotes a rear upper cross pipe which connects between the upper end parts of the left and right rear frames 25
  • On the lower side of the left and right seat frames 25 a there are respectively fixed left and right cushion brackets 25 b which support the upper end parts of left and right cushion units 21 .
  • the rear lower pipe 27 is formed in a U shape which opens upward when viewed from the front by having both sides of the main part, which is parallel with the left and right direction, bent upward. Both of the side parts of the rear lower pipe 27 extend upward with a slightly forward angle, and the tip ends thereof are butted from the lower side and joined with the rear end parts of the left and right lower frames 23 . To the rear sides of both of the side parts of the rear lower pipe 27 there are respectively joined the front end parts of the left and right pivot brackets 13 a . The upper end parts of the left and right pivot brackets 13 a are respectively joined with the lower end parts of the left and right lower frames 23 . On these left and right pivot brackets 13 a there are supported the pivot 13 . On the rear lower pipe 27 there is rotatably supported a main stand 29 b.
  • the seat 3 has, for example, a driver seating surface and a passenger seating surface that are integrated one behind the other, and it extends to the vicinity of the rear end of the vehicle body.
  • the seat 3 also functions as a lid (cover) which opens and closes the upper opening of a goods storage box 39 positioned below the front part thereof.
  • reference symbol 3 a denotes a rotation shaft which rotatably connects the lower side of the front end part of the seat 3 with the front end part of the goods storage box 39 .
  • the vehicle body cover 5 has: a front cover 31 which covers the periphery of the head pipe 12 and the down frame 22 , from the front side thereof; a front inner cover 32 which covers the periphery of the head pipe 12 and the down frame 22 , from the rear side thereof; an under cover 33 which covers the periphery of the left and right lower frames 23 , from the lower side to the transversely outer side thereof; and a step floor cover 34 which covers the periphery of the left and right lower frames 23 , from the upper side thereof so as to form the step floor 4 .
  • the vehicle body cover 5 has: a rear center cover 35 which rises from the rear part of the step floor cover 34 toward the front lower end of the seat 3 , and which covers the battery unit 6 , a control unit 44 thereabove, and the goods storage box 39 , from the front side thereof, and left and right rear side covers 36 which extend diagonally up-backward from the left and right side parts of the rear center cover 35 so as to continue therefrom, and which, below the rear part both sides of the seat 3 , cover the periphery of the left and right rear frames 25 and the seat frame 25 a , from the transversely outer side thereof.
  • the respective covers 31 through 36 are composed of a synthetic resin for example.
  • the step floor cover 34 forms the step floor 4 which is slightly tilted forward with respect to the horizontal direction between the front inner cover 32 and the rear center cover 35 .
  • the rear end parts of the left and right lower frames 23 , the lower parts of the left and right rear frames 25 , the left and right pivot brackets 13 a , and a rear lower frame are not covered by the vehicle body cover 5 , and are exposed to the outside thereof (outside the vehicle body).
  • the left and right steps 29 c are arranged, when viewed from the side of the vehicle, at positions at the upper rear of the battery unit 6 which do not overlap with the battery unit 6 . Therefore, even if an external force is applied to the left and right steps 29 c , which respectively project outward in the vehicle widthwise direction of the left and right rear frames 25 , and the left and right rear frames 25 are deformed inward in the vehicle widthwise direction, concentrated application of the external force to the battery unit 6 is prevented.
  • the left and right rear frames 25 are tilted so as to be positioned more on the transversely inner side with approach to the upper side thereof (so that the distance between the left and right rear frames 25 becomes shorter in the left-right direction), the vehicle body width in the periphery of the left and right steps 29 c is suppressed as the positions of the left and right steps 29 c approach to the upper side.
  • the battery unit 6 is such that, for example, four 12V lead batteries 41 are lined up along the vehicle widthwise direction (left-right direction) and are connected in series to thereby configure a 48V high-voltage battery 6 A, and further, this high voltage battery 6 A is housed within a single battery case 56 . Electric power is supplied from this battery unit 6 to the driving motor 8 via the control unit (driver) 44 , to thereby drive the driving motor 8 and cause the two-wheeled motor vehicle 1 to travel.
  • the control unit (driver) 44 Electric power is supplied from this battery unit 6 to the driving motor 8 via the control unit (driver) 44 , to thereby drive the driving motor 8 and cause the two-wheeled motor vehicle 1 to travel.
  • each lead battery 41 is of a rectangular solid shape the planar shape of which is rectangular, and at positions at both end parts on one long edge of the rectangle, there is provided a positive terminal 41 a and a negative terminal 41 b .
  • Each battery 41 is such that the positive terminal 41 a and the negative terminal 41 b are respectively facing upward and are arranged one behind the other, and also, long edges of the rectangle are adjacent to each other and are lined up along the vehicle widthwise direction.
  • the respective lead batteries 41 are arranged so that the positive terminals 41 a and the negative terminals 41 b are alternated front to rear for adjacent lead batteries 41 .
  • the lead batteries 41 are arranged so that the long edges, on which the positive terminals 41 a and the negative terminals 41 b are arranged, face each other.
  • the respective batteries 41 are shown sequentially from the left with reference symbols 411 , 412 , 413 , and 414 .
  • the pair of lead batteries 412 and 413 positioned on the transversely inner side in the high voltage battery 6 A are lined up in a manner such that the long edges opposite to the long edges with the respective terminals 41 a and 41 b positioned thereon, are adjacent to each other when viewed in plan view.
  • the positive terminal 41 a and the negative terminal 41 b positioned on the front side of the respective long edges of these lead batteries 412 and 413 are connected to each other via an intermediate cable 42 .
  • the intermediate cable 42 has a circuit breaker 43 , and this circuit breaker 43 is arranged at a transversely intermediate position on the upper front side of the battery case 56 (refer to FIG. 5 ).
  • the circuit breaker 43 engages and disengages connection at the intermediate portion of the high voltage battery 6 A, by left-right swing operations (engaging and disengaging operations of the circuit breaker 43 ) of a lever 43 a , which projects upward from the upper part thereof.
  • the battery case 56 is composed of for example, a synthetic resin, and it has a case main body 57 which opens upward, and a case cover 58 which closes the upper opening thereof.
  • the case main body 57 is of a transversely long rectangular solid box which corresponds to the outer shape of the high voltage battery 6 A (refer to FIG. 7 ), and the bottom wall 57 a thereof is formed in a stepped manner with the transversely inner side portion displaced upward with respect to the transversely outer side portions, conforming to the vertically displaced arrangement of the respective lead batteries 41 as described later.
  • a retention part 58 a formed in a stepped manner with the transversely inner side thereof displaced upward so as to correspond to the arrangement of the respective lead batteries 41 .
  • the retention part 58 a contacts with the upper surface of the respective lead batteries 41 to thereby press and retain these batteries.
  • the terminal accommodating part 58 b is of a trapezoidal shape with a substantially horizontal upper edge and angled edges connecting to both sides thereof when seen in front view, and it accommodates therein the periphery of the positive terminal 41 a and the negative terminal 41 b of each lead battery 41 .
  • the case cover 58 is fixed on the upper part of the case main body 57 by a plurality of locking claws 58 c or the like (refer to FIG. 5 ).
  • a strip-shaped metal retention fitting 59 which is formed corresponding to the stepped shape thereof.
  • the battery unit 6 is arranged below the seat 3 and to the rear side of the front end thereof. Because the battery unit 6 has a predetermined height, the upper surface thereof is arranged above the upper surface of the step floor 4 , and the lower surface thereof is arranged below the upper surface of the step floor 4 .
  • the battery unit 6 has a transverse width greater than that of the seat 3 , and as shown in FIG. 3 and FIG. 5 it is accommodated within the transversely inner side width of the rear part of the left and right lower frames 23 .
  • corner parts of the upper outer side of the battery unit 6 are each formed with an obtuse angle when seen in front view, and projecting parts 38 that span from the center cover 35 to the rear side covers 36 are formed so as to accommodate both of these corner parts (refer to FIG. 11 ).
  • control unit 44 and the goods storage box 39 above the battery unit 6 are supported by a supporting frame 61 which is formed in an L shape along the front surface and the upper surface of the battery unit 6 when seen in side view.
  • the supporting frame 61 has a pair of left and right frame pipes 62 that are formed in the above L shape.
  • Each of the left and right frame pipes 62 is composed of a round steel pipe, and it integrally has a front perpendicular part 62 a extending perpendicularly in front of the battery unit 6 , and an upper horizontal part 62 b extending substantially horizontally above the battery unit 6 .
  • the lower ends of the left and right front perpendicular parts 62 a are butted from above and welded to both sides of a substantially horizontal transversely long plate 62 d .
  • the plate 62 d contacts from above, the upper surface of a bracket 62 e on the center cross pipe 24 , and the intermediate part of this plate 62 d is detachably fastened with a bolt 62 f inserted from thereabove.
  • a rear end part 62 g of the upper horizontal part 62 b is vertically crushed and formed in a substantially horizontal and flat shape, and this rear end part 62 g contacts from above, with the rear cross pipe 26 and is detachably fastened with a bolt 62 h inserted from thereabove.
  • the supporting frame 61 can be attached to and detached from the vehicle body frame 11 by attaching or detaching the respective bolts 62 f and 62 h.
  • the front half part of the upper horizontal part 62 b and the front perpendicular part 62 a are provided along the vehicle body center plane within the transverse width of the pair of lead batteries 412 and 413 on the transversely inner side of the battery unit 6 .
  • the rear half part of the upper horizontal part 62 b is provided being angled when seen in plan view so as to be positioned more on the transversely outer side with approach to the rear side.
  • the control unit 44 is a driver for the driving motor 8 , and it integrally has a PDU (power drive unit) 47 and an ECU 49 .
  • the rear part of the goods storage box 39 is supported on the rear upper cross pipe 26 a.
  • output cables 46 are connected respectively to the positive terminal 41 a and the negative terminal 41 b positioned on the front side thereof.
  • Each of these output cables 46 is guided to the outside of the battery case 56 through a vertically long outer slit 58 d that is formed on both sides of the front surface of the case cover 58 of the battery case 56 .
  • Each output cable 46 is arranged, for example, through the vehicle body lower part first, and then appropriately to the upper right side of the vehicle body, to be connected to the control unit 44 above the battery unit 6 .
  • On both sides of the front surface of the case cover 58 on the transversely inner side of the outer slit 58 d , there is formed a vertically long inner slit 58 e , which is longer than the outer slit 58 d , and the intermediate cable 42 is guided to the outside of the battery case 56 through this inner slit 58 e.
  • the left side pair of lead batteries 411 and 412 and the right side pair of lead batteries 413 and 414 of the high voltage battery 6 A are lined up so that the long edges having the respective terminals 41 a and 41 b are adjacent to each other when seen in plan view.
  • the positive terminal 41 a and the negative terminal 41 b positioned on the rear side of each pair of lead batteries 41 are connected to each other via a connection cable 45 .
  • 48V DC electric current from the high voltage battery 6 A is converted into three-phase alternating current via the PDU 47 in the control unit 44 , and is then supplied to the driving motor 8 , which is a three-phase alternating current motor.
  • the 48V DC electric current is voltage-lowered to 12V via a DC-DC converter (hereunder, referred to simply as converter) 48 , which is provided as a separate unit from the control unit 44 , and is then supplied to the ECU 49 in the control unit 44 and to other general electrical components 51 .
  • reference symbol C denotes a charger which is provided integrally with or separately from the two-wheeled motor vehicle 1 .
  • a contactor 52 Between the negative pole side of the high voltage battery 6 A, and the PDU 47 and the negative pole side of the converter 48 there is provided a contactor 52 .
  • the contactor 52 is provided with a relay circuit, and to one of the terminals of a switch 52 a of this relay circuit there is connected the output cable 46 , which extends from the negative pole side of the high voltage battery 6 A.
  • the other terminal of the switch 52 a is connected to the PDU 47 and the negative pole side of the converter 48 .
  • one of the terminals of a coil 52 b of the relay circuit is connected to the positive pole side of one of the lead batteries 41 in the high voltage battery 6 A via a main switch 53 .
  • the other terminal of the coil 52 b is grounded.
  • reference symbol 8 a denotes three phases of motor cables which extend from the control unit 44 (PDU 47 ) to the driving motor 8 .
  • Each motor cable 8 a extends so as to transversely cross the vehicle body from the right side of the control unit 44 for example, and then extends along the left arm of the swing arm 18 to reach the driving motor 8 (refer to FIG. 10 and FIG. 14 ).
  • the main switch 53 is provided in the vicinity of the head pipe 12 for example (refer to FIG. 1 and FIG. 2 ).
  • a main harness 63 arranged between the periphery of the main switch 53 and the control unit 44 , extends backward from the vehicle body front part along the left lower frame 23 and the left under pipe 28 and extends upward along the left side of the rear lower pipe 27 and the left rear frame 25 , and it then reaches the control unit 44 and the converter 48 .
  • the converter 48 is provided at the rear of the control unit 44 and between the left and right rear frames 25 so as to overlap with the left and right rear frames 25 when viewed from the side of the vehicle, and the upper and lower end parts thereof are respectively fastened and supported on the rear upper cross pipe and the rear lower cross pipe.
  • the battery unit 6 is such that two lead batteries 41 arranged on the transversely center side thereof (center side batteries 412 and 413 ) are provided so as to be displaced higher than two lead batteries 41 arranged on the transversely outer sides (side batteries 411 and 414 ).
  • the lead batteries 41 on the transversely outer sides are unlikely to become an obstacle for the operation, and with the outer corner parts of the upper parts of the lead batteries 41 on the transversely outer side being positioned low, the projecting parts 38 of the under-seat covers (the rear center cover 35 and the left and right rear side covers 36 ) are unlikely to be conspicuous.
  • a transversely long space 57 b surrounded by the lower inner side surfaces of the lead batteries 41 on the transversely outer sides, the bottom surfaces of the lead batteries 41 on the transversely inner side, and the upper surface of the supporting plate 28 a .
  • this space 57 b for example, a brake cable 64 and the like which extend from the periphery of the steering bar handle 2 toward the rear wheel 7 are laid out.
  • the main harness 63 and the output cable 46 may also be laid out in the space 57 b.
  • the circuit breaker 43 provided on this intermediate cable 42 is arranged on the upper front side of the battery unit 6 .
  • the circuit breaker 43 is supported on a lower supporting plate 43 b which is provided to bridge between the left and right frame pipes 62 .
  • the lower supporting plate 43 b is formed in a transversely long flat plate shape substantially orthogonal to the longitudinal direction, and both ends thereof are respectively welded and fixed on the left and right frame pipes 62 .
  • the circuit breaker 43 can be attached to and detached from the lower supporting plate 43 b by attaching or detaching the respective bolts 43 d.
  • each output cable 46 on both sides can be removed after disengaging the circuit breaker 43 to halve the voltage, and this operation can be performed in a focused manner from the front side of the battery unit 6 .
  • an electric power input part 54 which enables recharging of the battery unit 6 with electric power supplied from a power source outside the vehicle.
  • the electric power input part 54 includes a power plug socket (plug-receiving socket) with a grounding electrode that corresponds to a plug (plug connector) of a commercial power source (AC 100V) for example.
  • the electric power input part 54 is supported on an upper supporting plate 54 a provided to bridge between the left and right frame pipes 62 above the circuit breaker 43 .
  • the power source includes the charger C.
  • the upper supporting plate 54 a is formed in a transversely long inversed-V shape when seen in front view which forms the front surface thereof orthogonal to the longitudinal direction, and both ends thereof are welded and fixed respectively on the left and right frame pipes 62 .
  • the electric power input part 54 At the rear of the transversely intermediate part of the upper supporting plate 54 a there is arranged the electric power input part 54 , and a front end flange part 54 b of this electric power input part 54 contacts from the front side with the transversely intermediate part of the upper supporting plate 54 a , while these are respectively fastened detachably with left and right screws 54 c inserted from the front side.
  • the electric power input part 54 can be attached to or detached from the upper supporting plate 54 a by attaching or detaching the left and right screws 54 c.
  • each motor cable 8 a extends downward from the right side part of the control unit 44 and is then bent backward, and after having been bent downward again in the vicinity of the right rear frame 25 , it extends, above the pivot 13 , left-downward toward the left side of the vehicle body.
  • a plate-shaped inner rear fender 68 which overlaps therewith when viewed from the side of the vehicle.
  • the respective cables 8 a guided out to the rear side of the vehicle body through this cutaway 68 a extend backward along the left arm of the swing arm 18 and reach the driving motor 8 .
  • a detection cable 8 b for rotation speed detection extends from the driving motor 8 along the respective motor cables 8 a .
  • the respective cables 8 a and 8 b are arranged within an arm cover 18 a attached to the outer side of the left arm.
  • the scooter-type electric vehicle in the embodiment is a two-wheeled motor vehicle 1 provided with: a vehicle body frame 11 which is provided with a down frame 22 extending down-backward from a head pipe 12 , and lower frames 23 extending backward from the lower end part thereof; a seat 3 provided at the rear of the head pipe 12 for allowing a passenger to sit thereon; a step floor 4 provided between the head pipe 12 and the seat 3 , for allowing the passenger to place their feet thereon; and a battery unit 6 for supplying electric power to a driving motor 8 , in which four lead batteries 41 are lined up in the vehicle widthwise direction and are connected in series.
  • the serial connection of the respective lead batteries 41 can be cut off easily, and in this state, operations of attaching and detaching the battery unit 6 can be smoothly performed.
  • the circuit breaker 43 is arranged at a comparatively high position, enabling an operation to be performed in a superior posture compared to the case of a circuit breaker 43 being arranged at a low position. Furthermore, as a result of the circuit breaker 43 being arranged at a comparatively high position, it is possible to suppress the level of water exposure influence being exerted thereon.
  • the lead batteries 41 on the vehicle body outer sides are low, the lead batteries 41 on the vehicle body outer sides are unlikely to become an obstacle when performing an operation of connecting the lead batteries 41 on the vehicle center side, and the operation can be efficiently performed as a result.
  • the scooter-type electric vehicle is such that a space 57 b is formed by the lower inner side surfaces of the side batteries 411 and 414 , and the bottom surfaces of the center side batteries 412 and 413 .
  • the space 57 b can be formed by the lower inner side surfaces of the lead batteries 41 on the transversely outer sides, and the bottom surfaces of the lead batteries 41 on the transversely inner side, and members such as wiring and cables can be laid out within this space 57 b.
  • the scooter-type electric vehicle is such that there is provided a rear center cover 35 which covers the rear of the step floor 4 , under the seat 3 ; in the rear center cover 35 there is provided an opening 65 which enables access (connection) to the circuit breaker 43 from a straddle space M above the step floor 4 ; and on the opening 65 there is provided a lid 66 which opens and closes this opening 65 .
  • an operation of disengaging the circuit breaker 43 can be easily performed, and also, the circuit breaker 43 can be covered and hidden when no operation is being performed.
  • the scooter-type electric vehicle is such that at a position facing the opening 65 within the rear center cover 35 , there is provided an electric power input part 54 which enables charging of the respective lead batteries 41 .
  • the scooter-type electric vehicle is such that there is provided a locking mechanism 67 which is capable of locking the lid 66 .
  • the scooter-type electric vehicle is provided with: a control unit 44 which is provided above the battery unit 6 and controls the driving motor 8 ; and a swing unit 18 U which is swingably supported on the vehicle body frame 11 and has the driving motor 8 built-in.
  • Motor cables 8 a for supplying electric power from the control unit 44 to the driving motor 8 extend from the vehicle widthwise one side of the control unit 44 , and after having extended toward the vehicle widthwise other side at the rear of the battery unit 6 , they are guided into the swing unit 18 U.
  • the motor cables 8 a which are high voltage lines, can be shortened to the greatest possible extent.
  • the motor cables 8 a which connect between the control unit 44 and the driving motor 8 are such that portions thereof which extend along the vehicle widthwise direction at the rear of the battery unit 6 can absorb torsion associated with swing of the swing unit 18 U, and it is therefore possible to mitigate force exerted in the flexing direction.
  • the present invention is not limited to the above embodiment, and, for example, nickel hydride batteries or lithium ion batteries may be used instead of lead batteries.
  • the battery unit may be configured with a combination of three, or five or more batteries.
  • the battery unit is configured such that two batteries are arranged on the transversely inner side, and a battery is arranged on either one of the transversely outer sides.
  • scooter-type electric vehicle there are not only to two-wheeled vehicles but also three-wheeled (including ones with one front wheel and two rear wheels as well as ones with two front wheels and one rear wheel) and four-wheeled vehicles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
US13/819,589 2010-09-30 2011-09-27 Scooter-type electric vehicle Active 2032-06-08 US9193410B2 (en)

Applications Claiming Priority (3)

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JP2010220725 2010-09-30
JP2010-220725 2010-09-30
PCT/JP2011/072077 WO2012043562A1 (ja) 2010-09-30 2011-09-27 スクータ型電動車両

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US9193410B2 true US9193410B2 (en) 2015-11-24

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EP (1) EP2623406B1 (ja)
JP (1) JP5355796B2 (ja)
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US10938005B2 (en) * 2015-04-08 2021-03-02 Ujet S.A. Seat assembly or battery assembly that can be quickly exchanged, and motor vehicle, in particular motor scooter
US11560071B2 (en) * 2017-05-29 2023-01-24 Constin Gmbh Device for improving the accessibility of the storage space below vehicle seats
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US9216787B2 (en) 2013-09-18 2015-12-22 Mahindra Tractor Assembly, Inc. Electric vehicle
USD731363S1 (en) 2013-09-18 2015-06-09 Mahindra Tractor Assembly, Inc. Electric scooter
JP6361329B2 (ja) * 2014-07-04 2018-07-25 三菱自動車工業株式会社 バッテリパックのケーブル接続構造
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Publication number Priority date Publication date Assignee Title
US10938005B2 (en) * 2015-04-08 2021-03-02 Ujet S.A. Seat assembly or battery assembly that can be quickly exchanged, and motor vehicle, in particular motor scooter
US20200031294A1 (en) * 2016-03-31 2020-01-30 Honda Motor Co., Ltd. Electric vehicle drive device
US10787219B2 (en) * 2016-03-31 2020-09-29 Honda Motor Co., Ltd. Electric vehicle drive device
US11560071B2 (en) * 2017-05-29 2023-01-24 Constin Gmbh Device for improving the accessibility of the storage space below vehicle seats
US20200339210A1 (en) * 2018-04-27 2020-10-29 FUELL Inc. Electric saddle type vehicle
US11654996B2 (en) * 2018-04-27 2023-05-23 FUELL Inc. Electric saddle type vehicle
US11753101B2 (en) 2018-04-27 2023-09-12 FUELL Inc. Electric saddle type vehicle with storage areas

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US20130161108A1 (en) 2013-06-27
CN102958789A (zh) 2013-03-06
JPWO2012043562A1 (ja) 2014-02-24
EP2623406A1 (en) 2013-08-07
CN102958789B (zh) 2015-04-29
JP5355796B2 (ja) 2013-11-27
EP2623406A4 (en) 2014-04-30
WO2012043562A1 (ja) 2012-04-05

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